Dorian Tool 73310148221 Live Center MT4 Morse Taper

Product Description

The DORIAN TOOL 73310148221 is a live center with a Morse Taper shank designed for use between centers on lathes in precision turning operations. Built on an MT4 taper shank, it supports workpieces up to 5,060 pounds and spins to a maximum of 5,500 RPM. The quad bearing configuration allows the center point to rotate with the workpiece, reducing friction and heat buildup during extended cuts. The point is steel construction with an included angle of 60 degrees and a point diameter of 1.14 inches. Machinists and toolroom technicians use this type of live center where rigidity, load capacity, and rotational accuracy are critical.

This live center is suited for manual and CNC lathes equipped with an MT4 tailstock. It is appropriate for medium-to-heavy turning applications in production shops, tool rooms, and job shops where workpiece weight and spindle speed demands exceed the capacity of lighter-duty centers. The 0.0001 inch accuracy rating makes it a viable choice for finish turning and close-tolerance work. No carbide-tipped point is included, which is a consideration when turning hardened materials.

Key Features

• MT4 Morse Taper shank for secure tailstock engagement
• Quad bearing design supports rotation with the workpiece, reducing friction and wear
• Maximum workpiece weight capacity of 5,060 pounds
• Maximum spindle speed of 5,500 RPM
• Accuracy rated to 0.0001 inches for close-tolerance turning
• Thrust load rating of 1,438 pounds for heavy axial cutting forces
• 60-degree included point angle, standard for general turning work

Compatibility

Designed as an OEM-style live center replacement or addition for lathes with an MT4 Morse Taper tailstock socket.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Before seating the taper, power down the lathe and confirm the tailstock bore and taper size match MT4 specifications. Clean the tailstock socket and taper shank thoroughly to ensure full contact and prevent fretting. Never use the center beyond its rated RPM or workpiece weight limits, as overloading the bearings can cause premature failure or loss of workpiece control.